Site Reliability Engineer

Join Proton and build a better internet where privacy is the default

Proton was founded in 2014 by scientists from CERN on a simple truth: privacy is a fundamental human right. Since then, we've built the world's largest encrypted email service (Proton Mail) and expanded into Proton VPN, Proton Drive, Proton Pass, and Proton Calendar — tools used by millions globally to protect their freedom, fight censorship, and keep their data safe. In some situations, Proton has literally helped save lives.

We are profitable, independent (no VC control), and selectively hire from the top ~1% of applicants. Our 700+ team members across 50+ countries come from leading organizations and elite academic backgrounds. We move fast, keep hierarchy light, and prioritize impact over optics. If you want to do meaningful work with exceptionally high-caliber people, this is it. Check our open-source projects here.

Purpose of the role:  

Storage is at the very center of everything we do. Whatever needs to be persisted eventually uses our Storage infrastructure. For this we run our infrastructure predominantly on-premise in multiple data centers. In this role you will join the Storage SRE team that is responsible to automate, scale, enhance and run our Storage infrastructure. The office locations we hire into for this role are Geneva/Switzerland or Paris/France.

What you will do: 

• Design, build, and operate resilient Storage infrastructure for Proton’s most critical production services
• Develop and maintain automation tools to enhance deployment processes, configuration management, and service reliability
• Improve monitoring, alerting, and incident response to maintain high availability and rapid issue resolution
• Optimize and scale Proton’s infrastructure
• Collaborate with product and security teams to implement best practices for privacy and data protection at every layer of the stack
• Document and share knowledge to foster a culture of learning and continuous improvement within the team and beyond
• Work closely with a group of Back-End Engineers and Architects to build resilient, massively-scalable solutions for millions of people to rely on
• Document back-end capabilities and their proper use
• Join the oncall rotation to operate the Storage service

Job requirements: 

• Experience building complex production systems
• Operational experience, demonstrating the ability to diagnose and troubleshoot complex problems for critical systems
• Experience with software development
• Solid understanding of security best practices
• High-level understanding of cryptography concepts

Bonus points for:  

• Experience with storage systems (e.g. Ceph, Seaweed or Tape)

Even if you don’t meet all the requirements listed above, but feel you could still be a great fit, please apply.

What We Offer

• Office First: Proton is an office-first company. We expect you to spend most of your time in the office, and while we do offer some flexibility to work from home, we believe in-person collaboration helps us build the best products.
• Technology: We provide all the devices and software you need to excel in your role, ensuring you have the best tools at your disposal to achieve your goals.
• Food: Lunch and snacks are provided by Proton every day at our offices.
• Transport: We will always support our employees with transport costs through subsidizing public transport, bike allowances, or parking spaces based on your office location.
• Salary Range  : Paris - Base Annual Gross - 50,000€ to 77,000€ - Final compensation will be determined based on the candidate's qualifications, skills, and previous experience. 
• Stock Options: At Proton, we are all owners of the company and you'll be offered stock options when you join us.
• Flexible Working: You can define your own working hours as long as it works with team meetings.
• Learning and Development: We are committed to your professional growth. Proton offers various learning opportunities, including training programs, conferences and events, and continual learning.
• Employee Benefits: Comprehensive health insurance plans, competitive retirement savings options, generous vacation and leave policies, and wellness programs.
• Work that Matters: Proton is a community-first organization, started with the support of a crowdfunding campaign and built with community input. To this day, Proton’s only source of revenue is user subscriptions. Over 100 million people trust and support Proton, and we put our users and community first in everything we do.

Our Commitment to Diversity and Inclusion

At Proton, we believe diversity drives innovation and strengthens our mission to provide privacy as a default for all. We are committed to fostering an inclusive environment where all individuals, regardless of race, ethnicity, gender, age, sexual orientation, physical ability, or socio-economic background, feel valued and empowered. We strive to create equal opportunities, promote open dialogue, and support continuous learning to ensure every voice is heard and respected.

If you need any extra support or reasonable adjustments during the hiring process, please let your talent partner know.

Candidate Privacy Notice

When you apply for a position, refer a candidate, or are considered for a role at Proton Technologies AG (Proton, we, us, or our), your information is stored in Greenhouse, in accordance with their Service Privacy Policy. This information is used to evaluate your suitability for the posted position. We also retain this information for consideration for future roles that you may apply for or that we believe may align with your background and skills.

If we no longer have a legitimate business need to process your information, we will either delete or anonymize it. Should you have any inquiries about how we use or manage your information, or if you wish to access, correct, or delete your data, please contact our privacy team at careers@proton.ch.

Proton does not accept unsolicited resumes from any sources other than directly from candidates. We will not pay a fee for any placement resulting from an unsolicited offer, even if the candidate is subsequently hired by Proton.

To learn more about our privacy policy, please visit our privacy policy page.